INHERITANCE OF COLOR IN PERCHERON HORSES. 2/5 



TABLE XII. 



The dam's prepotency is high, where the ages are on an equal- 

 ity and just as high as in Table VII., where the dam had the sup- 

 posed advantage of age. 



Next is given a table showing very young dams mated with 

 sires 513, the more prepotent sires. 



TABLE XIII. 



This table shows an equality as to prepotency between very 

 young dams and the more prepotent sires. In Table XIV. very 

 young dams mated with sires of all ages are included. 



TABLE XIV. 



Now let us compare the results of the last three tables, XII. 

 XIV., and see if there is any consistent relation between these 

 results. Arranging them so as to show an increasing prepo- 

 tency for the dam, we find that dams 3-4 years of age mated 

 with the more prepotent sires 5-13 (Table XIII.) are least pre- 

 potent. Next comes the case of young dams mated with sires 

 of all ages, with a prepotency of 53.8 per cent. Still more prepo- 

 tent are young dams mated with their equals in age (60 per cent.) 



The number of cases in which very old dams occur is too 

 small to permit a tabulation in this manner. The results for 



